1.A financial analyst wants to determine if the average daily return of any stock listed on XYZ stock market, one week after New Year's Day is greater than $2. Which hypothesis test would he use? A. One mean (sigma known) B. One mean (sigma unknown ) C. Mean of difference, using dependent samples (paired data) D. Difference of two means (independent samples) E. Several means (ANOVA) F. One proportion G. Difference of two proportions H. Ch-square test for independence I. Slope of the regression line Part 2. Eight BYUI students were asked about the number of credits they are taking this semester. We obtained the following data: 14,12,13,10,9,16,10,14. Find the standard deviation of the number of credits. Part 3. The proportion of Americans who have diabetes is known to be 0.105. You think that this proportion may have changed, so you wanted to find the 95% confidence interval for the proportion of Americans who have diabetes. How many Americans should you include in your sample if you want your margin of error to be no more than 3% (0.03)